Lyndex-nikken 300-036 Round Collet 9/16 in 1.988-20 Thread

Product Description

The LYNDEX-NIKKEN 300-036 is a round collet designed for precision workholding in CNC machining and manual milling applications. It accepts a 9/16-inch round shank and features a 1.988-20 external thread for secure mounting in compatible collet chucks and holders. With an overall length of 3-3/4 inches and a total indicator runout (TIR) of 0.0011 inches, this collet delivers the concentricity required for tight-tolerance turning, milling, and drilling operations. It is installed by machinists and toolroom technicians in production and job-shop environments where repeatable tool holding accuracy is critical.

This collet is suited for use in machine shops running CNC lathes, milling centers, or manual machines that accept threaded round collet systems. The 1.988-20 external thread specification makes it compatible with collet chucks and nose pieces designed for that thread standard. Typical applications include holding round bar stock, drill blanks, and straight-shank cutting tools in both production runs and prototype work where runout control directly affects finished-part quality.

Key Features

• 9/16-inch bore size for standard round shank tooling and workpieces
• 1.988-20 external thread for positive engagement with compatible collet chucks
• 3-3/4-inch overall length provides extended reach and stable clamping
• 0.0011-inch TIR supports tight-tolerance machining operations
• Round collet geometry ensures uniform clamping force around the full shank circumference

Compatibility

Designed for use in collet chucks and holders that accept a 1.988-20 externally threaded round collet with a 9/16-inch bore. Consult your collet chuck documentation to confirm thread and bore compatibility before installation.

Installation Notes

Installation should be performed by a qualified machinist or toolroom technician. Power down and lock out the machine spindle before inserting or removing the collet. Inspect the collet bore and chuck threads for chips or damage prior to assembly, as contamination directly impacts runout. Torque the collet chuck to the machine manufacturer's specified procedure using appropriate spanner wrenches - do not use improvised tools that could damage the thread or collet body.